Two new far infrared bands of $Ar-NH_{3}$ have been measured that share a common lower state with the band previously measured in our $lab^{1}$. These three bands have all been assigned as transitions originating from the ground $state^{2}$. One has been assigned as the first van der Waals stretching transition. The other two have been assigned as transitions to the levels resulting from the splitting of the js-1, k-0 rotational state of free $NH{3}$ due to the anisotropic potential, as suggested by B.J. $Howard^{3}$. An analysis using a least squares fit to an analytical form for the intermolecular potential has been carried out.